| 41. | Lower mantle melt rates would form mafic melts that incorporate silicic melts before erupting.
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| 42. | The metasedimentary rocks are quartz-rich and the amphibolites represent mafic igneous intrusions.
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| 43. | The Altiplano and the adjacent southern Puna has experienced mafic volcanism during the Cenozoic.
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| 44. | Mantle plume hypotheses may rely on identifying mafic and ultramafic intrusions and coeval basalt volcanism.
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| 45. | The sedimentary fill of the basins consists largely of alluvial fan and mafic volcanic flows.
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| 46. | Pyroxene, ilmenite, magnetite, and olivine are the mafic minerals most commonly present.
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| 47. | This is because of the extremely low silica content ( the lava is mafic ).
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| 48. | With an increase in calcic plagioclase and mafic minerals the rock type becomes a diorite.
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| 49. | Volcanism of the mafic capping stage began with the eruption of aphyric hawaiite lava flows.
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| 50. | The mafic shield-building stage culminated with emplacement of the fourth and highest unit.
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